Possible implantation bleeding?

So I took a pregnancy test on the day my period was due and it was negative. Later in the day there was light red spotting (barely any) when I wiped. I put in a tampon assuming my period was about to start, but there was no more blood.

Then yesterday (period one day late) there was a very very tiny bit of brown blood on my underwear. Then I was getting cramps like my period was going to start so I put a panty liner on. Woke up this morning (2 days late) with no blood and no more cramping.

I’m waiting until Monday to test again if AF still hasn’t made a full appearance since I got a negative already, but could that have been implantation bleeding? I’ve also heard some people don’t get a positive until their period is a couple days late.

I had a chemical pregnancy/very early miscarriage my last cycle with obvious pregnancy symptoms. This time I don’t feel much or any pregnancy symptoms, But I know every pregnancy is different?

Also I took opk tests to see when I ovulated since I had a chemical last cycle and I thought it was going to be thrown off. But I got a positive around the same time Glow predicted my ovulation.

Any input?! I know I won’t know until AF shows up or I take another test, but I’d still like to hear some input or if it’s happened to anyone before. 😊